title: Spectroscopic characterization of Ti-doped α-ZnAl2S4 spinel-type single crystals.
abstract: The spectroscopic characteristics of the α-ZnAl(2)S(4) wide bandgap semiconductor doped with Ti ions are investigated. It is shown, that the ZnAl(2)S(4):Ti spinel-type crystals exhibit luminescence in the IR spectral range 0.8-1.4 µm. The observed spectroscopic characteristics are assigned to the emission bands arising from the ligand -Ti(4+) charge transfer for octahedral sites of titanium that is in agreement with the experimental evidence for the absence of the EPR signal from Ti ions. A qualitative explanation of the experimental data is given.
authors.affiliation: Institute of Applied Physics, Academiei Street 5, Chisinau MD-2028, Republic of Moldova. anggell@gmail.com
authors.forename: Sergiu
authors.initials: S
authors.lastname: Anghel
authors.forename: Georges
authors.initials: G
authors.lastname: Boulon
authors.forename: Alain
authors.initials: A
authors.lastname: Brenier
authors.forename: Emery
authors.initials: E
authors.lastname: Fortin
authors.forename: Sophia
authors.initials: S
authors.lastname: Klokishner
authors.forename: Dmitrii
authors.initials: D
authors.lastname: Koshchug
authors.forename: Leonid
authors.initials: L
authors.lastname: Kulyuk
authors.forename: Konstantin
authors.initials: K
authors.lastname: Sushkevich